“Such things once heard, men should praise the cityand its general; and the favor of Zeus which accomplishedthis will be given its due honor.” Christopher Collard

χάρις is the subject of τιμήσεται which is in middle voice (subject affected Carl Conrad). LSJ states that middle of τῑμάω functions as a passive. Either way, the honor is being bestowed on χάρις ... Διὸς. This makes me wonder if χάρις here is a hypostasis of Zeus.

The translations I looked at (Denn.-Page, C. Collard, L. MacNeice) made χάρις the subject of τιμήσεται with one exception, Fagels “Zeus will have the hero’s share of fame ... .”

Fraenkel glosses 'and the favour (or grace) of Zeus which has brought this to pass will be appreciated as it should be'.

According to West, 'πόλις appears here not as a recipient but as the bestower of praises. The passage is almost universally misinterpreted, despite Hermann's clear and correct explanation.' The explanation follows, but it is in Latin, which I have trouble understanding. Anyway, the answer seems to be taking κλύοντας and πόλιν together, and for this irregular concord a parallel is given at line 577 ‘Τροίαν ἑλόντες ... Ἀργείων στόλος. The idea seems temptating, but I'll have to think about it yet.